UMI’s 4060-1 GM A-body bump steer kit (1971-1972) is designed to reduce or eliminate toe change during suspension travel (bump steer). This improves handling, straight line stability, and overall precision of the steering system. The kit includes a heavy-duty 5/8″ bolt for the outer tie rod stud to increase strength over the factory tapered design. The adjuster is made of 6061-T6 Aluminum hex for lightweight strength and features a hard anodized protective finish. Shims of 0.125”, 0.1875” and 0.250” are included in the kit. These bump steer kits have been race-tested and are proudly designed and manufactured in Philipsburg, PA, USA. Note: Spindle drilling is required to accept the 5/8″ adjustment bolt. Once drilled, the spindle cannot be returned to the factory taper. For the 1971-1972 GM A Body, the kit uses the factory inner tie rod. If replacement is required, use Proforged 104-10016 or an equivalent, (2) are required. Bump steer adjustment tools and theory can be found at longacreracing.com.
UMI’s 4060-1 GM A-body bump steer kit (1971–72) reduces toe change for improved handling and stability. It features a 5/8″ bolt, 6061-T6 anodized adjuster, and shims for tuning. Race-tested and made in PA, USA. Spindle drilling required.
6061-T6 Black Anodized Aluminum Adjuster Sleeve; 5/8-18 RH and 11/16-18 LH threads, 9.200" sleeve length
UMI 4060-1 bump steer kit boosts A-body handling and steering precision.
UMI Performance 71-72 GM A-Body Bump Steer Adjuster Kit
Works with factory inner tie rods and factory spindle
Race quality rod end, jam nuts and locking hardware
Laser cut spacers of 0.125", 0.1875" and 0.250"
Manufactured with pride in Philipsburg, PA, USA
Simply bolt-on. No spindle drilling required
Instructions with technical links included
4140 CrMo stud construction
UMI- HD Race Bumpsteer Kit
Bump Steer Adjuster
Race proven
